Combining Texts

All the ideas for 'The Runabout Inference Ticket', 'Letters to Leibniz' and 'On a supposed right to lie'

expand these ideas     |    start again     |     specify just one area for these texts

7 ideas

4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula
16519 No one can conceive of a possible substance, apart from those which God has created [Arnauld]
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
17896 We need to know the meaning of 'and', prior to its role in reasoning [Prior,AN, by Belnap]
17898 Prior's 'tonk' is inconsistent, since it allows the non-conservative inference A |- B [Belnap on Prior,AN]
11021 Prior rejected accounts of logical connectives by inference pattern, with 'tonk' his absurd example [Prior,AN, by Read]
13836 Maybe introducing or defining logical connectives by rules of inference leads to absurdity [Prior,AN, by Hacking]
23. Ethics / B. Contract Ethics / 3. Promise Keeping
22442 If lies were ever acceptable, with would undermine all duties based on contract [Kant]
23. Ethics / D. Deontological Ethics / 2. Duty
22441 The law will protect you if you tell a truth which results in murder [Kant]